Firebase Emulators easy start with backup and restore

This one is going to be quick and easy. Firebase has emulators that let you simulate a firebase environment locally. These emulators run in docker containers. This config will give you a docker container with the emulators installed and expose all the ports that you need to have exposed.

Add these files to the root of you project

Dockerfile

FROM node:lts

VOLUME ["/firebase"]
WORKDIR /firebase

RUN apt-get update
RUN apt-get -y install default-jre
RUN npm install -g firebase-tools
ENV GOOGLE_APPLICATION_CREDENTIALS=/firebase/google_creds.json

ENTRYPOINT ["firebase", "emulators:start", "--import=/firebase/emulator-data", "--export-on-exit"]

docker-compose.yaml

version: "3.9"
services:
  firebase_emulators:
    build: "."
    restart: always
    volumes:
      - .:/firebase
    ports:
      - "8080:8080"
      - "9099:9099"
      - "5001:5001"
      - "9199:9199"
      - "4500:4500"
      - "4400:4400"
      - "4000:4000"
      - "9299:9299"
      - "5000:5000"
      - "8085:8085"

One thing to note, you do need your google credentials file which you can get from the firebase console.

To run your emulators, docker-compose up. When you want to save the data, docker-compose down. Do note, the data will be saved in a folder named emulator-data